02-02-2009
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
im having trouble doing this:
i have a variable with 2 characters repeating e.g. aababbbaaaababaabbaabbba
is there a way i can search the variable for a's and b's and then change a's to b's and b's to a's?
im guessing its like getting the 1's compliment of the string
im doing this in... (2 Replies)
Discussion started by: vipervenom25
2 Replies
2. Shell Programming and Scripting
Hi,
I want, if a line is more than 80 characters length then put a new line with 4 space after each 80 characters to indent the data at same position.
Input:
200 Geoid and gravity anomaly data of conjugate regions of Bay of Bengal and Enderby Basin: New constraints on breakup and early... (3 Replies)
Discussion started by: srsahu75
3 Replies
3. Shell Programming and Scripting
Can someone help me to write a script / command to read in a file, character by character, replace any unknown ASCII characters with space. then write out the file to a new filename/
Thanks! (1 Reply)
Discussion started by: raghav525
1 Replies
4. Shell Programming and Scripting
Hi All,
I have a big log file i want to delete all characters (between 350th to 450th characters) starting at 350th character position to 450th character position.
please advice or sample code. (6 Replies)
Discussion started by: rajeshorpu
6 Replies
5. Shell Programming and Scripting
I have a huge file and I want to select first 10 charcters and last 2 characters of everyline and than will filter the unique line.
I know, it must be easy bt I am new to unix scripting:)
Ex.
I have file as below and need to e3kbaird and last 2 characters. and than unique records.
... (3 Replies)
Discussion started by: Sanjeev Yadav
3 Replies
6. Shell Programming and Scripting
Hi Experts,
How to sepearate the list digit with letters : with a space from where the letters begins, or other words from where the digits ended.
file
52087mo(enbatl)
52049mo(enbatl)
52085mo(enbatl)
25051mo(enbatl)
The output should be looks like:
52087 mo(enbatl)
52049... (10 Replies)
Discussion started by: rveri
10 Replies
7. Shell Programming and Scripting
Hello,
I do have folders containing having funny strings in their names and one space.
First, I do remove the funny strings and replace the space by an underscore.
find . -name '* *' | while read file;
do
target=`echo "$file" | sed 's/... (2 Replies)
Discussion started by: tempestas
2 Replies
8. Shell Programming and Scripting
Hi,
I have a string wherein i need to replace special characters with backslash and that character.
Ex:
If my string is a=qwerty123@!,
then the new string should be a_new=qwerty123\@\!\,
Thanks (3 Replies)
Discussion started by: temp_user
3 Replies
9. Shell Programming and Scripting
Hi Gurus,
my current code like below:
nawk '{f1 = (NF>1)?$1:""}{print f1, $NF}'|sed -e 's/s(/,/g;s/)//g;s/ *,/,/'|nawk -F"," '{ab}END{for (i in b) if (!(i in a))print i}'
I have file like below. (this is autosys job dependencies)
the job with s() is dependencies, the job without s() is... (10 Replies)
Discussion started by: ken6503
10 Replies
NICE(3P) POSIX Programmer's Manual NICE(3P)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond-
ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
NAME
nice - change the nice value of a process
SYNOPSIS
#include <unistd.h>
int nice(int incr);
DESCRIPTION
The nice() function shall add the value of incr to the nice value of the calling process. A process' nice value is a non-negative number
for which a more positive value shall result in less favorable scheduling.
A maximum nice value of 2*{NZERO}-1 and a minimum nice value of 0 shall be imposed by the system. Requests for values above or below these
limits shall result in the nice value being set to the corresponding limit. Only a process with appropriate privileges can lower the nice
value.
Calling the nice() function has no effect on the priority of processes or threads with policy SCHED_FIFO or SCHED_RR. The effect on pro-
cesses or threads with other scheduling policies is implementation-defined.
The nice value set with nice() shall be applied to the process. If the process is multi-threaded, the nice value shall affect all system
scope threads in the process.
As -1 is a permissible return value in a successful situation, an application wishing to check for error situations should set errno to 0,
then call nice(), and if it returns -1, check to see whether errno is non-zero.
RETURN VALUE
Upon successful completion, nice() shall return the new nice value -{NZERO}. Otherwise, -1 shall be returned, the process' nice value shall
not be changed, and errno shall be set to indicate the error.
ERRORS
The nice() function shall fail if:
EPERM The incr argument is negative and the calling process does not have appropriate privileges.
The following sections are informative.
EXAMPLES
Changing the Nice Value
The following example adds the value of the incr argument, -20, to the nice value of the calling process.
#include <unistd.h>
...
int incr = -20;
int ret;
ret = nice(incr);
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
getpriority(), setpriority(), the Base Definitions volume of IEEE Std 1003.1-2001, <limits.h>, <unistd.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE
/The Open Group 2003 NICE(3P)